what ink fits this pen

Fischer Space Pen refills fit the pen. If I use a space pen every day, I will need to get a refill about once per year, but your mileage may vary depending upon use. I usually pick up a black refill ar Staples. If you go to spacepen.com, you can order the following refills: - Medium width ink - Blue, black, red green, burgandy, purple, brown, turquoise, silver - fine ink - Blue, black, red, green - bold ink - blue, blackRefills are $6. There are space pen refills will fit Parker pens with the included adapter. They also have Cross type refills.

Can women use this pen?

I laughed when my wife asked if she could use this pen, and she responded by showing me how the pen would look if I were Frankenstein with a pen through my neck.... So, yes, women seem to be able to adapt quickly to this pen.

How does this pen open? Is it a twist of the cap to advance the cartridge?

It's a standard clicker pen. Really easy to use. You twist the endcap to replace the ink cartridge. It's a wonderful pen!

What is the barel of the pen made from, is it metal or plastic?

The entire barrel (end-to-end) is metal, but not magnetic, and it appears to be BRASS. The internal spring (magnetic) is steel. The internal mechanism appears to be white plastic.

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M4 Cap-O-Matic Series Military

Product ID: 747288854

Details

Age Range (Description)
Adult
Brand
Ink Color
Black
Point Type
Medium
Special Feature
Retractable

🔥Writes through boiling heat

🚀Works in zero gravity

❄️Operates in extreme cold

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Description

🖊️ Write beyond limits—because your ideas deserve a pen that’s out of this world!

ALL WEATHER WRITING - Sealed, pressurized ink cartridge performs from freezing cold to scorching heat
SLEEK FUNCTIONAL DESIGN - Cap-activated, refillable medium point ink in a durable, high-quality build
SPACE PROVEN RELIABILITY - Trusted on all manned American & Russian space missions
LIFETIME WRITING COMPANION - Engineered for longevity and backed by a 4.6-star rating from thousands
PERFECT SIZE FOR EVERYDAY USE - 5.375" length balances portability with presence—less chance of losing it

The Fisher M4 Cap-O-Matic Space Pen features a sealed, pressurized ink cartridge that writes flawlessly in zero gravity, extreme temperatures, and harsh environments. With a sleek cap-activated design, medium black ink point, and refillable cartridge, it’s the pen trusted by astronauts and professionals alike. Measuring 5.375 inches, it offers a perfect balance of portability and durability, making it a reliable writing instrument for everyday use and a lifetime of creativity.

Specifications

ASIN	B001E103CY
Additional Features	Retractable
Age Range Description	Adult
Brand Name	フィッシャー(Fisher)
Customer Reviews	4.6 4.6 out of 5 stars (3,543)
Drill Point	Medium
Global Trade Identification Number	00747609542448
Hand Orientation	Ambidextrous
Hardness	B
Ink Color	Black
Item Dimensions	13.2 x 1.3 x 1.3 cm
Item Weight	9 g
Manufacturer	Fisher Space Pens
Model Number	M4B

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Desertcart purchases this item on your behalf and handles shipping, customs, and support to Kyrgyzstan.

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